:root {
  color-scheme: light dark;
  --bg: #f7f4ee;
  --surface: #fffdf8;
  --surface-2: #ebe7dd;
  --text: #1f2421;
  --muted: #62685f;
  --border: #d7d0c2;
  --primary: #0f766e;
  --primary-2: #134e4a;
  --accent: #b45309;
  --good: #15803d;
  --bad: #b91c1c;
  --shadow: 0 18px 45px rgba(48, 41, 32, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161915;
    --surface: #20251f;
    --surface-2: #2b3029;
    --text: #f3f1e9;
    --muted: #b9b7ad;
    --border: #3d453a;
    --primary: #2dd4bf;
    --primary-2: #5eead4;
    --accent: #f59e0b;
    --shadow: 0 18px 45px rgba(0, 0, 0, 0.28);
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.brand {
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

nav a, .button {
  min-height: 2.55rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.9rem;
  color: var(--text);
  background: var(--surface);
  text-decoration: none;
  font: inherit;
  cursor: pointer;
}

nav a { border-color: transparent; background: transparent; }
nav a.button { border-color: var(--border); background: var(--surface); }
nav a:hover, nav a[aria-current="page"], .button:hover { border-color: var(--primary); }
.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  object-fit: cover;
  background: var(--surface-2);
}
.icon-button {
  width: 2.55rem;
  height: 2.55rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0;
  color: var(--text);
  background: transparent;
  cursor: pointer;
}
.icon-button:hover, .icon-button:focus-visible {
  border-color: var(--primary);
  outline: none;
}
.icon-button svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.button.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 700;
}
.button.disabled {
  color: var(--muted);
  border-color: var(--border);
  background: var(--surface-2);
  cursor: not-allowed;
}
.button:disabled,
.button.primary:disabled,
.button.primary.disabled {
  color: var(--muted);
  border-color: var(--border);
  background: var(--surface-2);
  cursor: not-allowed;
}
.button:disabled:hover,
.button.disabled:hover {
  border-color: var(--border);
}

main {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.marketing-page { padding-bottom: 4rem; }
.marketing-hero {
  min-height: min(720px, 78vh);
  display: grid;
  align-content: center;
  justify-items: start;
  padding: clamp(4rem, 10vw, 8rem) 0;
}
.marketing-hero h1 { font-size: clamp(2.7rem, 7vw, 5.5rem); }
.about-hero { min-height: auto; }
.about-hero .about-title {
  margin: 0 0 0.65rem;
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: 800;
  line-height: 0.97;
  letter-spacing: 0;
  text-transform: uppercase;
}
.about-prose { max-width: 800px; }
.about-prose p { line-height: 1.75; }
.about-prose h2 { margin: 2.5rem 0 1rem; font-size: clamp(1.4rem, 3vw, 2rem); }
.about-creator {
  display: grid;
  grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  margin-top: 2.5rem;
}
.about-creator h2 { margin-top: 0; }
.about-creator-photo {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.marketing-section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  border-top: 1px solid var(--border);
  scroll-margin-top: 5rem;
}
.marketing-section .section-head { margin-bottom: 1.5rem; }
.marketing-section .section-head h2,
.profile-section .section-head h2 {
  max-width: 800px;
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.05;
}
.section-lead {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.6;
}
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.benefit-card {
  display: grid;
  align-content: start;
  gap: 0.7rem;
  min-height: 230px;
  padding: 1.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.benefit-card h3, .benefit-card p { margin: 0; }
.benefit-card h3 { font-size: 1.25rem; }
.benefit-card p { color: var(--muted); line-height: 1.6; }
.benefit-number { color: var(--accent); font-size: 0.8rem; font-weight: 900; letter-spacing: 0.1em; }
.lane-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.lane-card {
  display: grid;
  gap: 0.85rem;
  padding: 1.4rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  box-shadow: var(--shadow);
}
.lane-card:hover, .lane-card:focus-visible { border-color: var(--primary); outline: none; }
.lane-card h2, .lane-card h3, .lane-card p { margin: 0; }
.lane-card h3 { font-size: 1.35rem; }
.lane-card p { color: var(--muted); line-height: 1.6; }
.lane-card .button { justify-self: start; }
.lane-code { color: var(--accent); font-weight: 900; letter-spacing: 0.08em; }
.step-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
  padding: 0;
  list-style: none;
}
.step-list li {
  display: grid;
  align-content: start;
  gap: 1rem;
  padding: 1.25rem;
  border-top: 3px solid var(--primary);
  background: var(--surface);
}
.step-list li > span {
  color: var(--primary-2);
  font-size: 1.7rem;
  font-weight: 900;
}
.step-list h3, .step-list p { margin: 0; }
.step-list p { margin-top: 0.5rem; color: var(--muted); line-height: 1.55; }

.view { display: none; padding: 2rem 0 3rem; }
.view.active { display: block; }
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
  gap: 1.25rem;
  min-height: calc(100vh - 9rem);
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(2.1rem, 7vw, 4.7rem);
  line-height: 0.97;
  letter-spacing: 0;
}

h2, h3 { letter-spacing: 0; }
.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.6;
}

.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.4rem;
}

.score-panel, .builder, .question-card, .results-card, details, .stats-output {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.score-panel { padding: 1.25rem; }
.score-panel h2 { margin-top: 0; }
.weight-list { display: grid; gap: 0.9rem; }
.weight-row { display: grid; gap: 0.35rem; }
.weight-label { display: flex; justify-content: space-between; gap: 0.75rem; font-weight: 700; }
.bar { height: 0.55rem; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.bar span { display: block; height: 100%; background: var(--primary); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-head h1 { font-size: clamp(1.9rem, 5vw, 3.25rem); }

.builder {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, minmax(145px, 0.7fr)) auto;
  gap: 1rem;
  align-items: end;
  padding: 1rem;
}

fieldset {
  border: 0;
  padding: 0;
  margin: 0;
}

legend, .field span {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.35rem;
}

.segmented label {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.35rem;
  min-height: 2.55rem;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
  cursor: pointer;
}

.field input, .field select {
  width: 100%;
  min-height: 2.55rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.65rem;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}
#answerForm.submitted input:disabled,
#answerForm.submitted select:disabled {
  opacity: 0.68;
  cursor: not-allowed;
}
#answerForm.submitted label {
  cursor: not-allowed;
}

.runner, .results { margin-top: 1.25rem; }
.quiz-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
}

.progress {
  flex: 1;
  height: 0.65rem;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
}
.progress span { display: block; height: 100%; background: var(--primary); }
.question-list { display: grid; gap: 1rem; }
.question-card { padding: 1rem; box-shadow: none; }
.quiz-question-card { scroll-margin-top: 6rem; }
#answerForm:not(.submitted) .quiz-question-card:not(.question-card--active) { display: none; }
#answerForm.submitted .quiz-actions { display: none; }
.question-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  color: var(--muted);
  font-size: 0.86rem;
}
.question-meta__label {
  color: var(--text);
  font-weight: 700;
}
.question-meta__chip {
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  line-height: 1.35;
}
.question-card p { line-height: 1.5; }
.options { display: grid; gap: 0.5rem; }
.options label {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem;
  align-items: start;
  padding: 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.helper-text {
  margin: 0 0 0.55rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}
.checkbox-options label,
.ordering-row,
.matching-row {
  background: color-mix(in srgb, var(--surface-2) 55%, transparent);
}
.ordering-options,
.matching-options,
.case-subquestions {
  display: grid;
  gap: 0.65rem;
}
.ordering-row,
.matching-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(9rem, auto);
  gap: 0.75rem;
  align-items: center;
  padding: 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.ordering-row select,
.matching-row select {
  width: 100%;
  min-height: 2.4rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}
.scenario-block {
  margin: 0.65rem 0;
  padding: 0.85rem;
  color: var(--text);
  background: color-mix(in srgb, var(--primary) 10%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--primary) 35%, var(--border));
  border-radius: 8px;
  line-height: 1.55;
}
.case-subquestion {
  display: grid;
  gap: 0.55rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.case-subquestion p {
  margin: 0;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
}
.results-card { padding: 1rem; box-shadow: none; }
.metric { font-size: 2.3rem; font-weight: 850; color: var(--primary-2); }
.review-item.correct { border-left: 5px solid var(--good); }
.review-item.incorrect { border-left: 5px solid var(--bad); }
.review-options {
  display: grid;
  gap: 0.5rem;
  margin: 0.6rem 0;
}
.review-option {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem;
  align-items: center;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  line-height: 1.45;
}
.review-option.correct {
  border-color: var(--good);
  background: color-mix(in srgb, var(--good) 14%, transparent);
}
.review-option.chosen-wrong {
  border-color: var(--bad);
  background: color-mix(in srgb, var(--bad) 14%, transparent);
}
.comparison-review {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0.6rem 0;
}
.comparison-review > div {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
}
.comparison-review h3 {
  margin: 0 0 0.45rem;
  font-size: 0.95rem;
}
.comparison-review ol {
  margin: 0;
  padding-left: 1.35rem;
  line-height: 1.55;
}
.matching-review-row {
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.9fr);
}
.option-tag {
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
}
.option-tag.good { color: var(--good); }
.option-tag.bad { color: var(--bad); }
.review-why {
  margin-top: 0.6rem;
  color: var(--text);
  line-height: 1.5;
}
.no-answer {
  color: var(--muted);
  font-style: italic;
}
.answer-good { color: var(--good); font-weight: 800; }
.answer-bad { color: var(--bad); font-weight: 800; }

.topics-browser {
  display: grid;
  gap: 0.85rem;
}
.topic-search {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.topic-search .field {
  display: grid;
  max-width: 620px;
}
.search-results {
  padding: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.search-result-list {
  display: grid;
  gap: 0.6rem;
}
.search-result {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.25rem 0.6rem;
  padding: 0.75rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
}
.search-result:hover, .search-result:focus-visible {
  border-color: var(--primary);
  outline: none;
}
.search-result strong,
.search-result span:not(.kind-badge),
.search-result p {
  min-width: 0;
}
.search-result span:not(.kind-badge) {
  grid-column: 2;
  color: var(--muted);
}
.search-result p {
  grid-column: 1 / -1;
  margin: 0.2rem 0 0;
  color: var(--muted);
  line-height: 1.45;
}
.kind-badge {
  align-self: start;
  padding: 0.16rem 0.45rem;
  color: var(--primary-2);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 35%, var(--border));
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
}
details { padding: 0.5rem 1rem; box-shadow: none; }
summary { cursor: pointer; font-weight: 800; padding: 0.7rem 0; }
.topic-domain {
  display: grid;
  gap: 0.75rem;
}
.topic-domain-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}
.topic-domain-head h2 { margin: 0; }
.topic-domain-head span {
  color: var(--accent);
  font-weight: 800;
}
.topic-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0.75rem;
}
.topic-card {
  display: grid;
  gap: 0.45rem;
  min-height: 12rem;
  padding: 0.9rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
}
.topic-card:hover { border-color: var(--primary); }
.topic-card strong { font-size: 1.1rem; }
.topic-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}
.resource-groups {
  display: grid;
  gap: 1.5rem;
}
.resource-group {
  display: grid;
  gap: 0.75rem;
}
.resource-card {
  min-height: 9rem;
}
.topic-block {
  border-top: 1px solid var(--border);
  padding: 0.9rem 0;
}
.concept-list { margin: 0.45rem 0 0; color: var(--muted); line-height: 1.55; }
.reference-list { margin: 0.45rem 0 0; color: var(--muted); line-height: 1.55; }
.reference-list a { color: var(--accent); text-decoration: underline; text-underline-offset: 0.16em; }
.reference-list a:hover { color: var(--accent-strong); }
.topic-page {
  display: grid;
  gap: 1.15rem;
  max-width: 880px;
  margin: 0 auto;
}
.topic-page h1 { font-size: clamp(2rem, 5vw, 3.6rem); }
.topic-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.topic-breadcrumb a { color: var(--primary-2); font-weight: 800; }
.topic-position {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}
.topic-summary {
  color: var(--text);
  font-size: 1.1rem;
  line-height: 1.65;
}
.topic-summary p { margin: 0; }
.topic-section {
  display: grid;
  gap: 0.35rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.topic-section h2 {
  margin: 0;
  font-size: 1.25rem;
}
.topic-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0.75rem;
  margin-top: 1rem;
}
.topic-nav .button:first-child { justify-self: start; }
.topic-nav .button:last-child { justify-self: end; }
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}
.service-item {
  display: grid;
  gap: 0.45rem;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem;
  background: var(--surface-2);
  text-decoration: none;
  cursor: pointer;
}
.service-item:hover, .service-item:focus-visible {
  border-color: var(--primary);
  outline: none;
}
.service-item strong { font-size: 1.05rem; }
.service-item p {
  margin: 0;
  line-height: 1.5;
}
.service-page .topic-summary {
  padding-bottom: 0.25rem;
}

.stats-output {
  margin-top: 1rem;
  padding: 1rem;
  white-space: pre-wrap;
  overflow: auto;
}

.stats-panel {
  display: grid;
  gap: 1rem;
}
.stat-tile-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}
.stat-tile {
  min-height: 6rem;
  display: grid;
  align-content: center;
  gap: 0.35rem;
  padding: 0.85rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.stat-tile span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}
.stat-tile strong {
  color: var(--primary-2);
  font-size: 1.85rem;
  line-height: 1;
}
.stats-breakdown {
  display: grid;
  gap: 0.6rem;
}
.stats-breakdown h3 {
  margin: 0;
  font-size: 1rem;
}
.stats-row-list {
  display: grid;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.stats-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 0.85rem;
  background: var(--surface);
}
.stats-row + .stats-row { border-top: 1px solid var(--border); }
.stats-row span {
  min-width: 0;
  overflow-wrap: anywhere;
}
.stats-row strong {
  color: var(--primary-2);
  white-space: nowrap;
}
.profile-page {
  display: grid;
  gap: 1.25rem;
  padding: 2rem 0 4rem;
}
.profile-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.5rem 0;
}
.profile-hero h1 { font-size: clamp(2.2rem, 6vw, 4.25rem); }
.profile-account { display: grid; gap: 0.75rem; justify-items: end; }
.profile-identity {
  min-width: min(100%, 300px);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.profile-identity > span:last-child { display: grid; gap: 0.2rem; }
.profile-identity small { color: var(--muted); }
.profile-avatar, .profile-avatar-fallback {
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface-2);
}
.profile-avatar { object-fit: cover; }
.profile-avatar-fallback {
  display: grid;
  place-items: center;
  color: var(--primary-2);
  font-size: 1.25rem;
  font-weight: 900;
}
.profile-signout { justify-self: start; color: var(--muted); font-size: 0.86rem; }
.profile-signin-prompt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.25rem;
  background: color-mix(in srgb, var(--primary) 9%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--primary) 45%, var(--border));
  border-radius: 8px;
}
.profile-signin-prompt h2, .profile-signin-prompt p { margin: 0; }
.profile-signin-prompt p { margin-top: 0.4rem; color: var(--muted); }
.profile-tabs {
  display: grid;
  gap: 1rem;
}
.profile-tab-list {
  display: flex;
  gap: 0.35rem;
  padding: 0.25rem 0.25rem 0.55rem;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
}
.profile-tab {
  min-height: 2.55rem;
  padding: 0.65rem 1rem;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
.profile-tab:hover,
.profile-tab:focus-visible {
  color: var(--primary-2);
  border-color: var(--primary);
  outline: none;
}
.profile-tab[aria-selected="true"] {
  color: var(--primary-2);
  border-color: var(--border);
  background: var(--surface);
}
.profile-tab-panel[hidden] { display: none; }
.profile-section {
  padding: 1.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.profile-section.needs-selection {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent);
}
.lane-preference-list fieldset, .lane-preference-list #laneOptions { display: grid; gap: 0.75rem; }
.lane-preference-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  align-items: start;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  cursor: pointer;
}
.lane-preference-option:hover, .lane-preference-option:focus-within { border-color: var(--primary); }
.lane-preference-option.selected {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 8%, var(--surface));
}
.lane-preference-option input { margin-top: 0.35rem; accent-color: var(--primary); }
.lane-preference-option > span { display: grid; gap: 0.3rem; }
.lane-preference-option small { color: var(--muted); line-height: 1.5; }
.profile-performance.is-awaiting-lane .stats-panel { opacity: 0.65; }
.empty-state {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.admin-root,
.admin-tabs,
.admin-tab-panel {
  display: grid;
  gap: 1rem;
}
.admin-scope-bar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}
.admin-scope-bar label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}
.admin-scope-bar select {
  min-height: 2.35rem;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  background: var(--surface);
  font: inherit;
  font-weight: 800;
}
.admin-scope-bar p {
  margin: 0;
  color: var(--muted);
}
.admin-tab-list {
  display: flex;
  gap: 0.35rem;
  max-width: 100%;
  padding: 0.25rem 0.25rem 0.55rem;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
}
.admin-tab {
  flex: 0 0 auto;
  min-height: 2.55rem;
  padding: 0.65rem 0.9rem;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
.admin-tab:hover,
.admin-tab:focus-visible {
  color: var(--primary-2);
  border-color: var(--primary);
  outline: none;
}
.admin-tab[aria-selected="true"] {
  color: var(--primary-2);
  border-color: var(--border);
  background: var(--surface);
}
.admin-tab-panel[hidden] { display: none; }
.traffic-report {
  display: grid;
  gap: 1rem;
}
.traffic-report .section-heading h2 {
  margin: 0;
}
.traffic-total-card,
.traffic-chart-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}
.traffic-total-card {
  min-height: 6rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 1.2rem;
}
.traffic-total-card span {
  color: var(--text);
  font-size: 1rem;
}
.traffic-total-card strong {
  color: var(--primary-2);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
}
.traffic-chart-card {
  display: grid;
  gap: 1rem;
  padding: 1.2rem;
}
.traffic-chart-head h3 {
  margin: 0 0 0.3rem;
  font-size: 1.55rem;
}
.traffic-chart-head p {
  margin: 0;
  color: var(--muted);
}
.traffic-chart {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.75rem;
  min-height: 260px;
}
.traffic-day {
  min-width: 0;
  display: grid;
  grid-template-rows: 1.5rem 1fr 1.5rem;
  gap: 0.5rem;
  align-items: end;
  text-align: center;
}
.traffic-count {
  align-self: start;
  color: var(--primary-2);
  line-height: 1;
}
.traffic-track {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  border-radius: 7px;
  background: color-mix(in srgb, var(--surface-2) 78%, var(--surface));
}
.traffic-bar {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  min-height: 0.25rem;
  border-radius: 7px 7px 0 0;
  background: linear-gradient(to top, var(--primary), var(--accent));
}
.traffic-label {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}
.admin-table {
  display: grid;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.admin-table-row {
  display: grid;
  grid-template-columns: 1.2fr 1.4fr 1fr 1fr;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 0.85rem;
  background: var(--surface);
}
.admin-table-row + .admin-table-row { border-top: 1px solid var(--border); }
.admin-table-row span {
  min-width: 0;
  overflow-wrap: anywhere;
}
.admin-table-head {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  background: var(--surface-2);
}
.table-sort-button {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  font-weight: inherit;
  text-align: left;
}
.table-sort-button:hover,
.table-sort-button:focus-visible {
  color: var(--primary-2);
}
.sort-indicator {
  display: inline-block;
  min-width: 0.8rem;
}
.member-cell {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.country-cell {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.subtle-label,
.table-caption {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
}
.lane-badge {
  display: inline-flex;
  width: fit-content;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--primary-2);
  background: var(--surface-2);
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
}
.topic-pages-table .admin-table-row,
.pages-table .admin-table-row {
  grid-template-columns: minmax(0, 1fr) 7rem 1fr;
}
.pages-table.show-lanes .admin-table-row {
  grid-template-columns: minmax(0, 1fr) 7rem 7rem 1fr;
}
.countries-table .admin-table-row {
  grid-template-columns: minmax(0, 1fr) 7rem 7rem;
}
.quizzes-table .admin-table-row {
  grid-template-columns: 1.05fr 1.2fr 0.95fr 1.35fr 0.7fr 0.65fr;
}
.quizzes-table.show-lanes .admin-table-row {
  grid-template-columns: 1.05fr 1.2fr 0.95fr 0.7fr 1.35fr 0.7fr 0.65fr;
}
.admin-table-body {
  display: grid;
}
.admin-table-head + .admin-table-body .admin-table-row:first-child {
  border-top: 1px solid var(--border);
}

@media (max-width: 900px) {
  .hero, .builder, .results-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 2rem; }
  .about-creator { grid-template-columns: 1fr; }
  .segmented { grid-template-columns: repeat(2, 1fr); }
  .topbar { align-items: flex-start; flex-direction: column; }
  .benefit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .profile-hero { align-items: flex-start; flex-direction: column; }
  .admin-scope-bar { align-items: stretch; flex-direction: column; }
  .stat-tile-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .traffic-chart { gap: 0.45rem; }
  .traffic-track { height: 180px; }
  .admin-table-row { grid-template-columns: 1fr 1fr; }
  .topic-pages-table .admin-table-row,
  .pages-table .admin-table-row,
  .countries-table .admin-table-row,
  .quizzes-table .admin-table-row { grid-template-columns: 1fr 1fr; }
  .topic-nav { grid-template-columns: 1fr; }
  .topic-nav .button { justify-self: stretch; }
}

@media (max-width: 540px) {
  .ordering-row,
  .matching-row,
  .matching-review-row,
  .comparison-review {
    grid-template-columns: 1fr;
  }
  .benefit-grid, .step-list { grid-template-columns: 1fr; }
  .profile-signin-prompt { align-items: stretch; flex-direction: column; }
  .stat-tile-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; gap: 0.3rem; }
  .stats-row strong { white-space: normal; }
  .traffic-total-card { grid-template-columns: 1fr; }
  .traffic-chart-card { padding: 0.9rem; }
  .traffic-chart {
    gap: 0.3rem;
    min-height: 210px;
  }
  .traffic-day { grid-template-rows: 1.25rem 1fr 1.25rem; }
  .traffic-count,
  .traffic-label { font-size: 0.72rem; }
  .traffic-track { height: 150px; }
  .admin-table-row { grid-template-columns: 1fr; gap: 0.35rem; }
  .topic-pages-table .admin-table-row,
  .pages-table .admin-table-row,
  .countries-table .admin-table-row,
  .quizzes-table .admin-table-row { grid-template-columns: 1fr; }
}